By swiping left center of the emulation screen with two fingers, you can enter game menu.
Exit to home screen.
Save the current state.
Load the state saved previously.
Select which type of bios rom you use. build-in BIOS is defalut. This BIOS emulates the minimum necessary functions. To chose another bios, place a bios ROM file as the file name 'bios.bin' via iTunes.
Select which type of Cartridge is installed on you emulated SEGA Saturn. Backup RAM is external back up ram to save game data. RAM is external ram for same games which use huge ram like King of Fighters.
Show or Hide ‘Frame per second’ which means speed of emulation on your device. ‘60/60’ is the best performance and equal to the real SEGA Saturn speed.
When FPS is less than 60, uoYabause skip a frame to reach 60 fps. if this option is enabled, uoYabause may lost frames, Furthermore may be broken internal SEGA Saturn emulation. ‘Off’ is recommended for accurate emulation.
Automatically switch to Landscape mode when emulations is started.
Screen is rendered rotating 90 degree for some vertical scroll games like 'RayForce'
If this option is disabled, uoYabause draw to the entire screen. Otherwise uoYabause keeps good old 4:3 scren size.
You can choose 'Hight quality but heavey' or 'Low quality but light'
uoYabause has on screen game pad. But you can also use MFI game controllers which are officially supported by Apple. The key mapping is fixed as the image below.